Improvement in stove-pipe thimbles



UNITED STATES PATENT Grrron.

NICHOLAS LINDEN, OF CHICAGO, ILLINOIS.

IMPROVEMENT IN STOVE-PIPE THIMBLES.

Specification forming part of Letters Patent No. 145,579, dated Deeeml:er 16, 1873; application filed November 13, 1873.

l'o all rwhom it Imay concern Be it known that I, NicHoLAs LINDEN, ofChicago, in the county of Cook and State of Illinois, have inventedcertain new and useful Improvements in Stove Pipe Thimblcs, of whichimprovements the following is a full, clear, and exact description,which will enable others skilled in the 'art to which my inventionappertains to make and use the same, reference being had to theaccompanying drawing, forming a pa-rt hereof, and in which- Figure l isa front elevation of one part of my improved device a-s it appearsbefore the opening for the pipe is iliade, and Fig. 2 a centralcresssection of the device when completed.

Like letters of reference indicate like parts.

The object ot' my invention is to make astovepipe thimble which may bereadily and cheaply constructed, and which will fit a chimneydioleconsiderably larger than the stovepipe, and hold the latter tirmly inits position in the hole, and so that an annular air-space will surroundthat part of the pipe which enters the hole. For the, purpose ofaccomplishin g the objects above setfortli, my invention consists incertain novel features relating to the cmstruction of the thimble, andhercinatter fully described.

In thedrawing, A represents a disk of sheet metal, about equal indiameter to the diameter required for the thimble. a a are radialtongues cut in the part A, and extending from, or nearly from, thecenter thereof, to, or nearly to, a circular line bounding the opening`for the pipe. aa are also radial tongues cut in the pa-rt A, andextending to the same outer circle that the tongues a ar do. I deem itpreferable, in order to secure strength and iirm ness, to make the sidesof each tongue a parallel to each other for a considerable distance, asshown, and this will result in making the tongues a the shortest. Thepoints of the tongue may also be cut away, as shown After the tongues aa and a a are cut, I arrange them in the position shown in Fig. 2. Theface of the part A may also be pressed into any suitable form, for thepurpose of giving it an ornamental appearance, as shown. B is acylindrical piece of sheet metal, of such a diameter as to fit nicelyinto a chimney-hole considerably larger than the stove-pipe. The piece Bis attached to the piece A, in the position shown in Fig. 2, by drawingthe tongues a a. back, and by turning them over the edge of the piece B,as shown. The piece A may be formed and its tongue cut and set by meansof stamps or dies suitable for that purpose.

It will be perceived, from reference to thc drawing, that an air-spaceexists between the pi eee B and the tongues, as shown at c, and that thetongues c af present a broad bearing to the pipe. and prevent it frombeing tilted, cX- cept for the purpose of forming such a bearing; andfor thc purpose of forming a more complete double wall to the air-space,the tongues a. a! may be omitted. It will also be perceived that theother objects above set forth may also be readily accomplished by meansot' a thiinble constructed substantially as herein shown and described.

Having thus described my invention, what I cla-iin as new, and desire tosecure by Letters Patent, is-

The .annular sheet-metal disk A, having a central opening cut therein toreceive the pipe, in combination with the cylindrical piece B, arrangedbetween the outer and inner rims or' the said disk, and attached to theinner face of the Vlatter by means of the radial tongues a a, cut fromthe central part of said disk, and bent to receive the pipe andv claspthe inner edge ot' the part B, substantially as shown and described, andfor the purposes set forth.

NICHOLAS LINDEN.

Titnesses F. F. WARNER, J. H. LAWLOR.

